Adaptive minimum duty cycle design to extend operational voltage range for DCDC converters
US12027980B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2023 |
| Grant date | Jul 2, 2024 |
| Priority date | — |
| Expiry date | Sep 6, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switched mode power supply (SMPS) includes a first switch, a second switch connected, at a switching node, in series with the first switch, and an inductor coupled between the switching node and an output node for providing an inductor current, at the output node. The SMPS also includes an oscillator circuit for providing a clock signal characterized by an oscillating frequency, an adaptive minimum duty-cycle circuit configured to receive an error voltage signal and to generate a current signal to vary the oscillating frequency of the clock signal in response to the error voltage signal, wherein the error voltage signal is based on an output signal at the output node, and a pulse-width modulation (PWM) circuit configured to receive the error voltage signal and the clock signal and to provide a switching control signal to control the first switch and the second switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.